# Crystal, QTC3, 32.768 kHz, 20 ppm, 7 pF
**URL**: https://novapart.co/products/QTC432.76807B2R/crystal-qtc3-32768-khz-20-ppm-7-pf
**SKU**: QTC432.76807B2R
**Manufacturer**: QANTEK TECHNOLOGY CORPORATION
**Category**: Crystals & Oscillators || Crystals
**Price**: €0.5330
**Stock**: 10+
**Lead Time**: 134 days (indicative)
## Description
Frequency Nom:32.768kHz; Crystal Case:SMD, 4.1mm x 1.5mm; Frequency Stability + / -:-; Load Capacitance:7pF; Frequency Tolerance + / -:20ppm; Product Range:QTC3 Series; Operating T
## Specifications
| Parameter | Value |
|---|---|
| Svhc | No SVHC (27-Jun-2024) |
| Frequency Nom | 32.768kHz |
| Product Range | QTC3 |
| Load Capacitance | 7pF |
| Crystal Frequency | 32.768kHz |
| Crystal Case / Package | SMD, 4.1mm x 1.5mm |
| Frequency Stability + / - | - |
| Frequency Tolerance + / - | 20ppm |
| Operating Temperature Max | 85°C |
| Operating Temperature Min | -40°C |
## Datasheet
📄 [Download PDF](https://novapart.co/datasheet/farnell:2508433/)
**QTC4 Series** 1.5x4.1 SMD Tuning Fork
## **Features**
- Low frequency in small size SMD
- Seam sealed ceramic package offers excellent environmental & heat resistance
- Extended temperature -40 to +85°C for industrial applications
## **Applications**
- Commercial and Industrial applications
- Wireless communications
- PDA and Smartphone
- Time of day applications
## General Specifi cations
|General Specifi cationspecifi cationsecifi cations|||Mechanical Dimensions|Mechanical Dimensions|Mechanical Dimensions|Mechanical Dimensions|Mechanical Dimensions|Mechanical Dimensions|Mechanical Dimensions|Mechanical Dimensions|Mechanical Dimensions|Mechanical Dimensions|Mechanical Dimensions||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|Nominal Frequency|32.768kHz||||||||||||||||||||
|Frenquency Tolerance at 25°C|±20ppm|||||||4.1±0.1|||||||||||||
|Temperature Coeffi cient|-0.034 ± 0.008ppm/ºC²||||||||||||||||||||
|Temperature Range (Operating)
Storage Temperature|-40 to +85ºC
-55 to +125°C||1.5 ± 0.1||~~=~~||||||||||||||||
|Load Capacitance CL|7pF, 9pF, 12.5pF||||||||||||||||||||
|Shunt Capacitance C0
Motional Capacitance C1|1.7pF typ.
3.0fF typ.||0.75 ± 0.1||||||||||||||||||
||||||||||||||||||||3.4||
|Equivalent Series Resistance (ESR)|65Kmax.|||||3.3
~~nn~~|||||||||||||||
|Drive Level|1µW max.||||||||||||||||||||
|Aging per Year|±3ppm max.||1.3||||||||||1.9||||||||
||||||||||||||||||||||
|Insulation Resistance (M)
Quality Factor|500 at 100Vdc ±15Vdc
70000 typ.||||~~0.6~~
~~a~~|||||||||1.1
RIL|||||||
|Capacitance Ratio|450 typ.||||||||||||||||||||
## Part Numbering Guide
|Part Numbering Guideg GuideGuide|Part Numbering Guideg GuideGuide|Part Numbering Guideg GuideGuide|Part Numbering Guideg GuideGuide|Part Numbering Guideg GuideGuide|Part Numbering Guideg GuideGuide|Part Numbering Guideg GuideGuide|
|---|---|---|---|---|---|---|
|Qantek Code|Package|Nominal Frequency (in kHz)|Load Capacitance|Operating Temperature Range|Frequency Tolerance|Packaging|
|Q = Qantek|TC4 = 1.5x4.1 SMD
=Tuning Fork|32.768|07 = 7pF
09 = 9pF
**12 = 12.5pF**|**B = -40 to +85°C**|1 = ±10ppm
**2 = ±20ppm**
3 = ±30ppm|R = 3000pcs Tape&Reel|
|Example: QTC432.76812B2R
bold letters = recommended standard specifi cation|||||||
## Tape and Reel Dimensions
**QANTEK Technology Corporation**
Phone: +1 877-227-0440 (tollfree) Fax: +1 877-227-0440 (tollfree)
www.qantek.com info@qantek.com
**QTC4 Series** 1.5x4.1 SMD Tuning Fork
## Marking Code Guide
Contains manufacturer code / lot code
**==> picture [252 x 186] intentionally omitted <==**
**----- Start of picture text -----**
Solder Refl ow Profi le
**----- End of picture text -----**
**==> picture [142 x 46] intentionally omitted <==**
**==> picture [248 x 186] intentionally omitted <==**
**----- Start of picture text -----**
Frequency vs. Temperature Characteristics
To calculate the frequency stability the parabolic curvature constant (K) is needed.
For calculating the stability at 45°C?
1- Change in temperature ( T) is (45-25) = +20°C
2- Change in frequency is (-0.034 x ( °C)²) = (-0.035 x (20)² = -13.6ppm
**----- End of picture text -----**
**QANTEK Technology Corporation** Phone: +1 877-227-0440 (tollfree) www.qantek.com Fax: +1 877-227-0440 (tollfree) info@qantek.com
## Links
- [View this product on Novapart](https://novapart.co/products/QTC432.76807B2R/crystal-qtc3-32768-khz-20-ppm-7-pf)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/qantek-technology-corporation/qtc432-76807b2r/crystal-32-768khz-7pf-4-1mm-x/dp/2508433)
---
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